2011 Tahoe Suspension ?? ZW7

[mb311]

Been reading on this forum and internets for 2 days straight trying to figure this damn Tahoe out for replacement suspension stuff. What a PITA. First I have 2011 Tahoe LT 4x4. It's the family vehicle, grocery getter. Bought it at GM dealer (certified) with 55K on the odometer and now has 160K.

I thought the suspension was original to vehicle but now I question everything. Positively I have 22755311 (AKA 540-631) rear shocks, and 25978750 springs installed on the vehicle now - I pulled numbers off the current shocks/springs.. These don't appear to match with the ZW7 rpo code though. Can someone confirm?

I'm going through maintenance items, and although no major issues, I have to believe these things are worn out by now. Want to maintain good ride, we rarely tow anything, only occasional dirt road during hunting season.

I want to replace the fronts with a quick coil over assembly if possible - recommendations?

For the rear should I just replace with the same shock? I have always replaced springs with shocks, and at 160K I think I should - recommendations.

Glove box sticker for reference.

THANK YOU!!!

 

[mb311]

Also not really interested in anything that lifts the vehicle.

 

[wjburken]

It appears that you have the right rear shocks for your vehicle per RockAuto. I would also assume you have the OE spring.

 

[Joseph Garcia]

Replace both the shocks and the springs.

@915_Tahoe can see your VIN in the photo, and he may be able to provide you with exact part number for both the shocks and springs.

 

[915_Tahoe]

Front Absorbers
LH/RH
20955487 $164.72 each

Front springs
LH/RH
25876851 $188.77 each

Rear Absorber
LH/RH
22755311 $122.18 each

Rear Springs
LH/RH
25978750 Discontinued

 

[swathdiver]

Everything Rene wrote is correct.

My rear OE springs were also discontinued. I used the 45H2164/19255624 in place of them. Towed 6,000 pounds the other day without a weight distribution hitch and she didn't sag. My truck is longer than yours and do not know if that makes a difference.

Using your VIN, ACDelco's website shows one other option: 45H0427/19255419

https://parts-catalog.acdelco.com/acesCat.php?glsId=aces

 

[mb311]

Thanks for confirming.

So ZW7 is not actually the premium smooth ride suspension without the accompanying rpo code (Z55, or G69 I think), at least for the GMT900.

And everything on RockAuto that says excluding the ZW7 would actually be ok to order in my case, since I don't in fact have the smooth ride package.

What a PITA to figure all that out. Sheesh.

 

[wakeboard8787]

Thanks for confirming.

So ZW7 is not actually the premium smooth ride suspension without the accompanying rpo code (Z55, or G69 I think), at least for the GMT900.

And everything on RockAuto that says excluding the ZW7 would actually be ok to order in my case, since I don't in fact have the smooth ride package.

What a PITA to figure all that out. Sheesh.

I have been going down this same rabbit hole and have a Tahoe that has the ZW7 RPO code and no Z55 or G69. I want to order the AC Delco spring/shock combo off Rock Auto that says "Except ZW7". Did you use this shock and spring and did it work?